Pump.



PATBNTED SEPT. a, 1903 J. G. ROTH.

PUMP. APPLICATION FILED APB. 8' 1903.

2 SHEETS-#SERT 1.

N0 MODEL.

No. 738,244. PATENTED SEPT. 8, 1903.

J. G. ROTH.

PUMP.

, APPLIOATION FILED un. s. 190s.

No MODEL. 2 SHEETS-SHEET z.

I14 y I T I I I I I I I I 18 1 I l l I I I .l I I v auen/(oz Wdh/tmb John G. Roth WMO-DQ x r I l atto/1M Ms ivo. 738,244.

Patented September 8, 1903.

PATENT OFFICE.

JOIIN G. ROTH, OF COLUMBUS, INDIANA.

PUMP.

SFEGIFICATION forming part of Letters Patent No. 738,244, dated September 8, 1903. Application filed April 8, 1909-. Serial No. 151,584. (No model.)

T0 (all 107mm/ it may concern:

Beit known that I, JOHN G. ROTH, a citizen of the United States, residing at Columbus, in the county of Bartholomew and State of Indiana, have invented certain new and useful Improvements in Pumps, of which the following is a specification.

In cased wells, especially deep-water wells, there is a considerable quantity of sand which is brought up continually with the water and which operates to cut out any bearings which may be 'used to support rotary parts Within the casing and which also operates to allow the moving parts of the pumping mechanism to ent the casing. Instances have been known where the casing has been ruined by such action, and it has become necessary to pull the whole casing and replace sections of it at very considerable expense.

The object of my invention is therefore to produce a pump element which may be attached either singly or in series to a rotary shaft which may be lowered into the casing of a well, the element being provided with means to prevent uninterrupted rotation of the water column as it rises and also with means to prevent the cutting of the casing.

The accompanying drawings illustrate my invention.

Figure 1 is a vertical section cf a well provided with a plurality of my pumping elements. Fig. 2 is an enlarged vertical section of one of the elements. Fig. 3 is a top plan of the parts shown in Fig. 2. Fig. 4 is an under plan of the parts shown in Fig. 2. Fig. 5 is a vertical section similar to Fig. 2 Vof a slightly-modified form, and Fig. 6 is a perspective view of the retarder.

In the drawings, lO indicates the casing of a well; 11, the pump-shaft,which is projected into the well substantially to its bottom; 12, suitable bearings for the shaft 11 at the upper end of the well, and 13 a pulley by which the shaft may be rotated. Each pumping element consists of a propeller and a retarder. The propeller consists of a central hub 14, adapted to receive and be secured to shaft 11 at any point. Secured to or formed integral with hub let are one or more spiral flights 15, which preferably are of such inclination and length that the upper end of one will lio im mediatcly over the lower end of the adjacent one. The flights 15 are preferably inclosed in a cylindrical casing 16; but this casing is not absolutely essential, although experience shows that it is preferable, for the reason that it prevents the Water from being thrown forcibly against the stationary Well-casing at the time when it is receiving its upward impulse. Surrounding cylinder 16 is the retarder-cylinder 17,formed, preferably, of a single sheet of metal the ends of which are not connected and the size of the cylinder such that it must be slightly compressed in order to allow it to enter the casing 10. Secured Within cylinder 17 and projecting toward the center thereof are retarding-blades 1S,which may be either curved or straight, as may be desired. In the drawings blades 18 are shown beneath the propeller; but they may be arranged above the propeller, if desired. In order to prevent a longitudial displacement of the retardencylinder 17, any suitable means maybe provided to extend over the propeller in opposition to the blades 18-as, for instance, downturned lips 19.

In operation a propeller with its-inclosing retarder-cylinder 17 is secured to the shaft 11 and lowered into the casing l0, the retardercylinder 17 being compressed sufficiently to enter the casing 10 and the propeller lying upon the blades 18 and forcing the retardercylinder downward into the well-casing 10. As many'of these pump elements as may be desired are secured to a shaft 11, and when they have been lowered into the well-casing the shaft 1l is lifted slightly, so as to bring all of the propellers upward slightly from the retarder-blades 18. The shaft is then rotated in the direction indicated by the arrow.

It will be readily understood that the propeller, which is placed a tthe lower end of the shaft 11, need not have one of the retarder elements unless desired, or the blades 18 may l be omitted, the cylinder 17 then serving merely as a protector for the adjacent portion of the Well-casing. The shaft 11 is not provided with any bearings within the wellcasing or with any bearings other than at the top end, so that ritis free to adjust itself to any inequalities or crooks in the well-casing, the device being substantially self-centered when the shaft is rotated at full speed be- ICO - within the column of water.

cause of the action of the propeller-blades There is, however, some wear between the propeller-blades and the adjacent stationary casing, and in my construction this wear is taken by the retarder shell or casing 17, so that if at any time this wear is considerable the operator has merely to withdraw shaft 11, eachy propeller serving to draw upward with its inclosing protector-casing, and this protectorcasing may be changed at comparatively little expense. The retarder-blades 18 may be held in place by other means, if desired; but it is much more convenient that these blades be carried by the same element, which serves to protect the well-casing from the Wear of the propeller.

I claim as my invention- 1. In a pump of the class described, a propeller element, and a separate protectingshell longitudinally movable within the wellcasing and surroundingthe propeller element, and interacting connections between the protecting-shell and the surrounded propeller whereby the shell may be moved longitudinally in the well-casing by longitudinal movement of the propeller.

2. In a pump of the class described, the combination with a propeller element consisting of one or more flights surrounded by a cylindrical casing rotated therewith, of a protector element surrounding the propeller element and longitudinally movable within the well-easing.

3. In a pump of the class described, a propeller element, a protecting-shell longitudinally movable within the well-casing and surrounding the propeller element, and retarding-blades carried by the protector-shell.

4. In a pump of the class described, the combination with a propeller element consisting of one or more flights surrounded by a cylindrical casing rotated therewith, of a protector element surrounding the propeller element and longitudinally movable within the well-casing, and retarding-blades carried by the protector-shell.

5. In a pump of the class described, a propeller element, a protecting-shell longitudinally movable within the Well-casing and surrounding'the propeller element, and means carried by the protecting-shell to be engaged by the propeller for axial movement.

6. In a pump of the class described, the combination with a propeller element consisting of one or more flights surrounded by a cylinder-casing rotated therewith, of a protector element surrounding the propeller element and adapted to lie within the well-casing, and means whereby the propeller may position the protector longitudinally.

7. In a pump of the class described, a propeller element, a protecting-shell adapted to lie within the well-casing and surround the propeller element, retarding-blades carried by the protector-shell, and fingers carried by the protector-shell to engage the propeller element in opposition to the retarding-blades.

8. In a pump of the class described, the combination with a propeller element consisting of one or more llights surrounded by a cylinder-casing rotated therewith, of a protector element surrounding the propeller element and adapted to lie within the well-casing, re-

tarding-blades carried by the protector-shell,

and fingers carried by the protector-shell to engage the propellerelement in opposition to the retarding-blades.

In witness whereof I have hereunto set my hand. and seal at Indianapolis, Indiana, this 23d day of March, A. D. 1903.

JOHN G. ROTH. [L s] I'Vitnesses:

ARTHUR M. HOOD, JAMES A. WALSH. 

